Customer reviews

4.2 out of 5 stars
4.2 out of 5
30 customer ratings
5 star 57% (57%) 57%
4 star 25% (25%) 25%
3 star 5% (5%) 5%
2 star 8% (8%) 8%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?